19905928

素因数分解:

$2^3\times 7^1\times {\mathrm{355463}}^1$

素因数の和:355476

約数の個数: 16

約数和(自身を含む): 42655680

約数和(自身を除く): 22749752

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 355463, 710926, 1421852, 2488241, 2843704, 4976482, 9952964, 19905928]

約数ペア:

[(1, 19905928), (2, 9952964), (4, 4976482), (7, 2843704), (8, 2488241), (14, 1421852), (28, 710926), (56, 355463)]